LAGOS — The Nigerian Exchange lost N613.08 billion as the All-Share Index fell 0.39 per cent to 243,017.38 points, bringing market capitalisation to N156.88 trillion. Forty-two stocks declined and 16 gained, with Unilever down 9.97 per cent. Trading volume jumped to 4.24 billion shares, mostly because of a large deal in Cornerstone Insurance.